Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Music Mcp

Searchable catalog of 100,000+ royalty-free and Creative Commons music tracks with instant attribution formatting.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

NETWORK_NO_FIXED_HOST PERMISSION_SHELL_DECLARED INSTALL_DOCUMENTED_INSTALLER SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    music_mcp/server.py, line 59 with urllib.request.urlopen(req, timeout=2.5) as resp:

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    music_mcp/telemetry.py, line 186 out = subprocess.check_output(

  • INSTALL_DOCUMENTED_INSTALLER Note

    Documentation shows an installer that pipes a download into a shell.

    AGENTS.md, line 13 curl -fsSL "https://music.builditwithai.xyz/install" | bash

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    music_mcp/sources/freesound.py, line 24 return bool(os.getenv("MUSIC_MCP_FREESOUND_TOKEN"))

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    uv.lock, line 1 version = 1

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    music_mcp/telemetry.py, line 186

    out = subprocess.check_output(

  • Install and update

    Note

    The docs document an installer that pipes a download into a shell. README documents an installer that pipes a download into a shell.

    INSTALL_DOCUMENTED_INSTALLER

    AGENTS.md, line 13

    curl -fsSL "https://music.builditwithai.xyz/install" | bash

    README.md, line 19

    curl -fsSL "https://music.builditwithai.xyz/install" | bash

    llms.txt, line 8

    - Curl: `curl -fsSL https://music.builditwithai.xyz/install | bash`

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    music_mcp/server.py, line 59

    with urllib.request.urlopen(req, timeout=2.5) as resp:

    music_mcp/server.py, line 796

    with urllib.request.urlopen(req, timeout=5) as resp:

    music_mcp/telemetry.py, line 548

    urllib.request.urlopen(req, timeout=3)

    Show more

    music_mcp/sources/freesound.py, line 30

    r = requests.get(API_URL, params={

    music_mcp/sources/internet_archive.py, line 34

    meta = requests.get(METADATA_URL.format(identifier=identifier),

    music_mcp/sources/internet_archive.py, line 62

    r = requests.get(SEARCH_URL, params=params, timeout=10, headers=DEFAULT_HEADERS)

    music_mcp/sources/jamendo.py, line 42

    r = requests.get(API_URL, params={

    music_mcp/sources/wikimedia.py, line 42

    r = requests.get(API_URL, params=params, timeout=10, headers=DEFAULT_HEADERS)

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    music_mcp/sources/freesound.py, line 24

    return bool(os.getenv("MUSIC_MCP_FREESOUND_TOKEN"))

    music_mcp/sources/freesound.py, line 27

    token = os.getenv("MUSIC_MCP_FREESOUND_TOKEN")

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    uv.lock, line 1

    version = 1

    music_mcp/catalogs/incompetech.json, line 1

    {

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit f6664cb42ef4. requests shell access. The manifest names this permission. The docs document an installer that pipes a download into a shell. README documents an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. reads an environment variable. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: f6664cb42ef4ac69b1820af0e905edba90d5ceae

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen